English verb conjugation
CAN CIRCLE

Regular verb: circle - circled - circled

Affirmation

Simple form	V-ing form
I can circle you can circle he can circle we can circle you can circle they can circle	I can be circling you can be circling he can be circling we can be circling you can be circling they can be circling
Perfect	V-ing perfect
I can have circled you can have circled he can have circled we can have circled you can have circled they can have circled	I can have been circling you can have been circling he can have been circling we can have been circling you can have been circling they can have been circling

Negation

Simple form	V-ing form
I cannot circle you cannot circle he cannot circle we cannot circle you cannot circle they cannot circle	I cannot be circling you cannot be circling he cannot be circling we cannot be circling you cannot be circling they cannot be circling
Perfect	V-ing perfect
I cannot have circled you cannot have circled he cannot have circled we cannot have circled you cannot have circled they cannot have circled	I cannot have been circling you cannot have been circling he cannot have been circling we cannot have been circling you cannot have been circling they cannot have been circling

Interrogative form

Simple form	V-ing form
can I circle? can you circle? can he circle? can we circle? can you circle? can they circle?	can I be circling? can you be circling? can he be circling? can we be circling? can you be circling? can they be circling?
Perfect	V-ing perfect
can I have circled? can you have circled? can he have circled? can we have circled? can you have circled? can they have circled?	can I have been circling? can you have been circling? can he have been circling? can we have been circling? can you have been circling? can they have been circling?

Interro-negative form

Simple form	V-ing form
can I not circle? can you not circle? can he not circle? can we not circle? can you not circle? can they not circle?	can I not be circling? can you not be circling? can he not be circling? can we not be circling? can you not be circling? can they not be circling?
Perfect	V-ing perfect
can I not have circled? can you not have circled? can he not have circled? can we not have circled? can you not have circled? can they not have circled?	can I not have been circling? can you not have been circling? can he not have been circling? can we not have been circling? can you not have been circling? can they not have been circling?